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In a surreal scene in the ABC biopic "Gilda Radner: It's Always Something," Jami Gertz plays both Radner and her "Saturday Night Live" character, Baba Wawa.
For as long as she can remember, Dr. Beth Karlan has been driven to answer one elusive question: what is the difference between a normal cell and a cancerous cell? While the question is common among medical researchers, Karlan's progress in discovering at least a partial answer has been both heartening and a continuing stimulus to continue the search.